How do I calculate GST from a total price?

To extract GST from an inclusive price, divide the total by 1.09 to get the original amount, then subtract it from the total. For example, if the total is $109, the original price is $100 and GST is $9.

Is service charge subject to GST?

Yes, GST is calculated on the total amount including service charge. If you have a $100 subtotal with 10% service charge, GST is applied to $110 (subtotal + service charge).

What is the difference between exclusive and inclusive GST?

Exclusive GST means GST is added to the price (price + 9% GST). Inclusive GST means the price already includes GST (to get the original price, divide by 1.09).

Do I have to pay service charge in Singapore?

Service charge is optional and set by individual businesses. It's common in restaurants and hotels at 10%, but not mandatory like GST.

How is service charge different from tips?

Service charge is an automatic percentage added to your bill by the establishment, typically 10%, and distributed among staff. Tips are voluntary additional amounts you choose to give.

Can I use this calculator for other GST rates?

Yes, you can adjust the GST rate field to calculate with different rates. This is useful for historical calculations or other countries with different GST/VAT rates.

Why is GST calculated after service charge?

In Singapore, GST is applied to the total bill amount after service charge is added. This means service charge is part of the taxable amount, so you pay GST on both the base price and the service charge.

GST & Service Charge Calculator

Calculate GST and Service Charge for Singapore - Exclusive and Inclusive calculations

Subtotal

GST Rate

Service Charge Rate

Exclusive GST

GST: $0.00

Total: $0.00

Exclusive Service Charge

Service Charge: $0.00

Total: $0.00

Exclusive GST and Exclusive Service Charge

Service Charge: $0.00

GST: $0.00

Total: $0.00

Inclusive GST

GST: $0.00

Total: $0.00

Inclusive Service Charge

Service Charge: $0.00

Total: $0.00

Inclusive GST and Inclusive Service Charge

Service Charge: $0.00

GST: $0.00

Total: $0.00

Exclusive GST and Inclusive Service Charge

Service Charge: $0.00

GST: $0.00

Total: $0.00

About GST & Service Charge Calculator

This calculator helps you understand and calculate GST (Goods and Services Tax) and Service Charge in Singapore. The default GST rate is 9% and the default Service Charge is 10%, but you can adjust these rates as needed.

How to Use

Enter your subtotal amount and adjust the GST and Service Charge rates if needed. The calculator will automatically show you seven different scenarios:

Exclusive GST: Adds GST to the subtotal
Exclusive Service Charge: Adds Service Charge to the subtotal
Exclusive GST and Exclusive Service Charge: Adds both GST and Service Charge to the subtotal
Inclusive GST: Removes GST from a GST-inclusive price
Inclusive Service Charge: Removes Service Charge from a Service Charge-inclusive price
Inclusive GST and Inclusive Service Charge: Removes both GST and Service Charge from a price that includes both
Exclusive GST and Inclusive Service Charge: Removes Service Charge first, then adds GST

Understanding GST and Service Charge in Singapore

GST (Goods and Services Tax) is a consumption tax levied on the supply of goods and services in Singapore. The current rate is 9% as of 2024.

Service Charge is an additional charge added by restaurants, hotels, and other service establishments, typically at 10%. Unlike GST, service charge is optional and set by the business.

Key Points:

GST is charged on the final bill amount after service charge is added
Service charge is distributed among service staff
Both are separate charges - GST is a tax, Service Charge is a gratuity

Common Scenarios

Restaurant Bill: If your food costs $100, with 10% service charge and 9% GST, you pay $100 + $10 (SC) + $9.90 (GST) = $119.90

Price Check: If a receipt shows $109 inclusive of 9% GST, the original price was $100 and GST was $9

Mixed Calculation: If a price includes service charge but not GST, remove the service charge first to get the base price, then add GST